Early Rush

A sole commuter heads into the underground at Charring Cross tube station.

Some Tube Facts:

- Busiest stations: During the three-hour morning peak, London's busiest Tube station is Waterloo, with 57,000 people entering

- The busiest station in terms of passengers each year is also Waterloo with 82 million

- The Underground name first appeared on stations in 1908

- London Underground has been known as the Tube since 1890, when the first deep-level electric railway line was opened

- The Tube's world-famous logo, 'the roundel' (a red circle crossed by a horizontal blue bar), first appeared in 1908

Source: TFL